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Hunter-Best [27]
3 years ago
14

Why do hotter substances have a tendency to rise?

Biology
2 answers:
Elena L [17]3 years ago
7 0

Answer:

Why do hotter substances have a tendency to rise?

Explanation:

 The molecules heats up and moves fast, since the air is less dense than the surrounding then the hot air floats upward.

alexandr402 [8]3 years ago
5 0
The transfer of heat will continue as long as there is a difference in temperature between the two locations. Once the two locations have reached the same temperature, thermal equilibrium is established and the heat transfer stops.
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What type of mutation is shown in the sequence below
almond37 [142]

Answer:

Single nucleotide deletion

Explanation:

Original DNA sequence:

A T A C G G T A

T A T G C C A T

Mutated DNA sequence:

A T C G G T A G

T A G C C A T C

​In the mutated sequence, there is a nucleotide missing. It goes from ATACGGTA to ATCGGTAG. The A nucleotide is gone. This represents a single base pair deletion.

Even though it is only one base, this changes the way the entire sequence is interpreted. The DNA transcribed into an mRNA and then translated into a protein by reading triplet codons which correspond to specific amino acids.

So while the initial sequence would be read as:

ATA, CGG, TA...

The new sequence would be read as:

ATC, GGT, AG...

So the sequence of the protein is completely altered.

7 0
3 years ago
One way that mining for mineral resources damages land is by
RUDIKE [14]
The correct option is D.
Mining for mineral resources is an intensive task that involves disturbing and disrupting the lands where the minerals are found. The process of mineral exploration and eventual mining cause great disturbances to the affected land and one of the damages done to such land is great increase in soil erosion. 
7 0
4 years ago
Read 2 more answers
Valence is the number of electrons and atom must gain or lose it ordered to
bulgar [2K]

Valence is the number of electrons an atom must gain or lose in order to consummate its outer energy level or have a stable octet in its outer shell

8 0
4 years ago
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Need Answer ASAP. Why do disruptive selection pressures tend to favor rapid evolutionary changes?
lawyer [7]

Answer:

A .They result in sudden gene frequency changes.

Explanation:

5 0
3 years ago
Explain the stages of tissue repair and fill in the blanks.
svp [43]

Answer:

a. Following an injury that breaks the surface of the skin. blood vessels dilate as a result of histamine release from mast cells and other damaged cells.

b. The blood forms a clot and upon drying, a scab forms a barriers between the body and the environment, while phagocytes work to clear the underlying debris from the wound site.

c. Blood vessels begin to re-grow into the wound while fibroblasts begin process of replacing the blood clot with Collagen

d. The remodeling phase then occurs as fibrosis and regeneration of tissues may continue for prolonged period of time.

Explanation:

Hello. Although you did not have all the answer options for the blanks presented in the sentences above, it is possible to conclude that the words in bold are the most appropriate to fill these spaces.

That's because when we cut ourselves, the blood vessels on the surface of our skin rapidly dilate, allowing a flow of blood to be observed. This dilation is accomplished by the release of histamine, which is released by mast cells, which are glands that regulate the immune response. At this point, it is important that any impuzera or microorganism, close to the wound site, is removed and this site undergoes cleaning. This is done by phagocytes, which are intended to prevent the cut from becoming the entrance to a bacterial infection.

Then the blood vessels begin to move and grow again across the wound, with the aim of covering this opening. In this comment, fibroblasts begin to apply collagen and replace the blood clot formed to prevent blood loss. Collagen will be responsible for maintaining the skin and tissues that will be rebuilt in the remodeling phase.

3 0
3 years ago
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